By: Ruben Guerrero

STATE: Louisiana
FOSSIL: Palmoxylon sp. (Petrified Palm-wood)

DESCRIPTION:
  • The petrified wood is a quartz-like stone fossil
  • The patterns in the rock look like the ones from the palm wood and comes in variety of colors
  • Most of the rocks are spotted
  • Depending on how it is cut, the rock can display a variety of patterns which is useful for jewelry
  • Petrified Palm-wood is considered the most beautiful fossil

(http://www.bernardine.com/images/stones/palm/palm-collage.jpg) These are samples of the variety of colora and petterns that the petrified plam-wood can display
(http://www.bernardine.com/images/stones/palm/palm-collage.jpg) These are samples of the variety of colora and petterns that the petrified plam-wood can display
(http://www.utexas.edu/tmm/exhibits/treasures/archive/images/palmwood.jpg) This a petrified palm-wood fossil
(http://www.utexas.edu/tmm/exhibits/treasures/archive/images/palmwood.jpg) This a petrified palm-wood fossil





TIME EXISTED:
  • The petrified palm-wood has said to come from forests 100 million years ago
  • To Louisiana though, the actual rocks have been formed 24-30 million years ago


PRESERVATION:
  • The petrified palm-wood comes from fallen trees in muddy soil/swamps
  • Those fallen trees don’t decay while due to the lack of oxygen
  • After time when wood is below the surface, minerals form a cast of mineral, which hardens, and water preserves the tissue of the actual wood inside the cast


WHO FOUND THE FOSSIL/WHY IS IT THE STATE FOSSIL:
  • Petrified palm-wood was officially declared the state fossil in 1976.
  • Petrified was actually fist found in Arizona by Lorenzo Silgreaves
  • Louisiana adopted the fossil due to the amount of mineral rich forest that it contains within the state

SOURCES:
Clementes, G., (unknown). Fossil Preservation. Petrification. Retrieved from: http://www.t-rat.com/Pages/FossilPreservation.html
Heinrich, P., V., (2001). Petrified Palm Wodd. The Louisiana State Fossil. Version 4.0. Retrieved from:
http://www.intersurf.com/~chalcedony/Palm.html